Archive for the ‘News’ Category

NJC issue 3 online!

We welcome you to NJC’s March issue, out now.

NJC issue 3 2012 coverA Letter by Harald Bock and coworkers (University of Bordeaux, France) features on this month’s front cover. In this Letter, the authors describe the synthesis of a family of ceramidonine-based polycyclic aromatic molecules obtained in only three straightforward steps from hydroxyl-anthraquinones and amino-phenazines or amino-quinolines. This opens a new route towards larger nitrogen-containing nano-graphenes.

Tetraazaarenes by the ceramidonine approach, Parantap Sarkar, Ie-Rang Jeon, Fabien Durola and Harald Bock, New J. Chem., 2012, 36, 570–574, DOI: 10.1039/C2NJ21033A Letter

NJC issue 3 2012 inside cover

The inside front cover showcases the work of Teresa Sierra, Alfredo Ballesteros et al. (a collaboration from teams in Spain and Italy), presenting the self-organization characteristics of rod-like fluorophores derived from 3-hexen-1,5-diyne that can be controlled by conjugation to different types of benzoic acid derivatives.

A linear conjugated core for functional columnar liquid crystals, Ana Pérez, José Luis Serrano, Teresa Sierra, Alfredo Ballesteros, Diana de Saá, Roberto Termine, Upendra Kumar Pandey and Attilio Golemme, New J. Chem., 2012, 36, 830–842 DOI: 10.1039/C2NJ20950K , Paper

In this issue, also check out the Perspective article – this month on mesoporous materials and their use in the field of nuclear industry:
Mesoporous materials in the field of nuclear industry: applications and perspectives, Philippe Makowski, Xavier Deschanels, Agnès Grandjean, Daniel Meyer, Guillaume Toquer and Frédéric Goettmann, New J. Chem., 2012, 36, 531–541 DOI: 10.1039/C1NJ20703B, Perspective

You can access and read the whole issue 3 of NJC here. Leave us a comment and let us know what you think!

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Announcing the 2012 NJC Symposia in China

Three prestigious institutions will be hosting members of the NJC editorial board and two NJC editors for the 2012 NJC Symposium: New Directions in Chemistry, which will be held during the last week of April 2012. Each one-day symposium will feature presentations by the editorial board members, prominent local chemists and the editors.

These symposia are free and open to all interested persons.

Please send an email with your full name, affiliation, status and which symposium you wish to attend by April 15th. This will allow us to welcome you under the best conditions.

Please join us and meet:

Members of the NJC Editorial Board who will be participating in the 2012 NJC Symposia include:
Co-Editor-in-Chief Professor Mir Wais HOSSEINI (University of Strasbourg, France)
Associate Editor Professor Michael SCOTT (University of Florida, USA)
Associate Editor Professor Peter JUNK (Monash University, Australia)
Professor Len BARBOUR (University of Stellenbosch, South Africa)
Professor Debbie CRANS (Colorado State University, USA)
Professor Odile EISENSTEIN (CNRS, Montpellier, France)
Professor Helen HAILES (University College London, UK)
Professor Takashi KATO (University of Tokyo, Japan)
Professor J N MOORTHY (Indian Institute of Technology, India)

NJC Managing Editor Dr Denise PARENT (Montpellier, France) and NJC Assistant Editor Dr Ling PENG (Marseille, France) will also be present.


April 23 at the University of Hong Kong (Host: Professor Vivian YAM)
Guest Speakers: Professors CHE Chi-ming and YANG Dan (University of Hong Kong); Professors JIA Guochen and TANG Ben Zhong (Hong Kong University of Science and Technology)

April 25 at East China University of Science and Technology, Shanghai (Host: Professor QIAN Xuhong)
Guest Speakers: Professor MA Dawei (Shanghai Institute of Organic Chemistry); Professor JIN Guoxin (Fudan University); Professor YANG Yi (ECUST)

April 27 at the Institute of Chemistry, Chinese Academy of Sciences, Beijing (Host: Professor YAO Jiannian)
Guest Speakers: Professor LIU Zhongfan (Peking University); Professors HAN Buxing and ZHANG Deqing (Institute of Chemistry, CAS Beijing)


Full details and the scientific programs will be available soon. Please check this blog in the coming weeks.

We all look forward to meeting you in Hong Kong, Shanghai or Beijing in April!

http://www.ucl.ac.uk/chemistry/staff/academic_pages/helen_hailes
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Meet the NJC team at this year’s conferences & events

Want to meet us? The NJC editors will be travelling all over the world to attend a wide variety of conferences and events in 2012. We will be there to mingle with the scientific community and talk to authors and referees. Why not get in touch if you’re at any of the same events? We look forward to seeing you there.

Below is a chronological list of this year’s events.

March   

April   

  • Prolines & Co.
    02-03 April, Montpellier, France, meet Eva Balentova, Deputy Editor
 
  •  PACA SCF
    16-17 April, Marseille, France, meet Ling Peng, Assistant Editor
 
 
  • NJC Symposia in China
    23 April in Hong Kong, 25 April in Shanghai, 27 April in Beijing meet Denise Parent, Editor & Ling Peng, Assistant Editor.
    Full details will be posted shortly on the NJC blog so please check back soon.  

June   

 July   

  • MolMat
    03-06 July, Barcelona, Spain, meet Yannick Guari, Assistant Editor
 
 
 September   

Whether you see us attending, exhibiting or participating in this year’s conferences, we would love the opportunity to meet you. Do say hello!

For more information, please contact Dr. Denise Parent/Dr. Eva Balentova at the NJC Editorial Office.

Please also take time to visit our NJC website to check regularly for the latest updates.

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HOT Articles: NJC’s latest selection!

Potentiometry to study the reversible redox chemistry of polyoxometalates.

In this Hot article, Alisa Rudnitskaya and co-workers (Aveiro University, Portugal) report on the use of potentiometric chemical sensors for the study of redox reactions of vanadium containing Keggin-type polyoxomolybdates, H5[PVV2Mo10O40]11H2O and K4[PVVMo11O40]6H2O.

Variations in the concentrations of vanadyl ions (VO2+) during the redox reactions of POMs were followed in the real-time. Apparently, release of vanadyl from the coordination sphere of reduced di-substituted POM occurred as the response to the presence of molecular oxygen. The use of potentiometry for this purpose is innovative, and the work provides an additional perspective in ongoing efforts to understand the reversible redox chemistry of these complexes when used in catalytic aerobic oxidation.

Studies on the redox turnover of polyoxometalates using potentiometric chemical sensors by Alisa Rudnitskaya,  Jose A. F. Gamelas,  Dmitry V. Evtuguin and Andrey Legin; New J. Chem., 2012, Advance Article; DOI: 10.1039/C2NJ21053C, Paper

Sensing properties of NiO-doped SnO2 polyhedra

The next Hot article provided by Chinese researchers (Z. Lou, L. Wang, T. Fei and T.  Zhang, Jilin University) describes the preparation, characterisations and application novel NiO-doped SnO2 polyhedra.

According to the authors, this hydrothermal synthesis of uniform NiO-doped SnO2 polyhedra is a facile, mild, and low-cost method to fabricate micro- and nanostructures. The application of the material in the field of resistive sensors for the revelation of ethanol has also been proposed: the main result is an enhancement of the response and recovery times in comparison with pure SnO2 based sensors. The effect of NiO doping on the response and response–recovery time towards ethanol is also discussed.

Enhanced ethanol sensing properties of NiO-doped SnO2 polyhedra by Zheng Lou, Lili Wang, Teng Fei and Tong Zhang, New J. Chem., 2012, Advance Article, DOI: 10.1039/C2NJ21030D, Paper

Interested to know more? Why not read by accessing the full articles now and let us know your thoughts and comments below! These “Hot articles” will be free to access for a period of 4 weeks.

To stay up-to-date with the latest NJC developments, sign up to its free table-of-contents email alert!

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Meet Our Authors – February Special Dendrimer Issue 2012

Here is a selection of author profiles from the 2012 February special dendrimer issue of NJC. We thank them most warmly for accepting our invitation and having kindly taken their time to answer a few questions for us.

Our first author is Prof. Donald Tomalia, who has pioneered dendrimer science and is the father of poly(amidoamine) dendrimers. He is currently the CEO/Founder of NanoSynthons LLC at the National Dendrimer & Nanotechnology Center in USA. His contribution to this special dendrimer issue describes the integrated dependency of dendrimer-based “dendritic effects” on critical nanoscale design parameters (CNDPs). The interdependency of these CNDPs (i.e., (a) size, (b) shape, (c) surface chemistry, (d) flexibility/rigidity and (e) architecture) actually causes “dendritic effects” as they produce important predictive nano-periodic property patterns. “I like combining fundamental science with a suitable translation of new discoveries into applications of value to society. Scientific surprises are stimulating; whereas, useful applications are an interesting score card for appraising successful translation of discovery” says Don. When asked for an alternative career path if not a scientist, Don answered “I would probably be a landscape architect”. Indeed, the invention of dendrimers did offer a new architecture in the landscape of synthetic macromolecules.

Dendritic effects: dependency of dendritic nano-periodic property patterns on critical nanoscale design parameters (CNDPs) by Donald A. Tomalia; New J. Chem., 2012, 36, 264-281; DOI:10.1039/C1NJ20501C

Dr. Anne-Marie Caminade, a French research director, is one of the leading figures in dendrimer science. She is interested in all aspects of dendrimers: their synthesis, their characterization, and their uses in different fields such as catalysis, nano-materials, and biology. She is also involved in different aspects of the chemistry of phosphorus since the beginning of her scientific career. Both fields have now merged in her activities, and she is an expert in the study of phosphorus-containing dendrimers. She contributed a review on “Janus” dendrimers, i.e. dendrimers having two different faces, in this special issue. For Anne-Marie, the most important things in science are freedom and imagination: freedom to choose what we want to explore, and the possibility to imagine new objects, new connections, and new answers. “Being a researcher was the dream of my life since I was 6 years old, and I have done my best to be able to live my dream all my life. The day I got a permanent position at the CNRS was the most important in my life. Even after many years of research, I am still as motivated as I was the first day, may be even more”, affirms Anne-Marie. Apart from living in her dream of science, Anne-Marie is an excellent cook of delicious and exquisite French dishes.

“Janus” dendrimers: syntheses and properties by Anne-Marie Caminade, Régis Laurent, Béatrice Delavaux-Nicot and Jean-Pierre Majoral; New J. Chem., 2012, 36, 217-226; DOI: 10.1039/C1NJ20458K


Prof. René Roy is a Professor of chemistry at the University of Québec in Montréal, Canada and specializes in glycodendrimers. René and his collaborators have contributed to the commercialization of two bacterial polysaccharide-based vaccines against meningitis and pneumonia. In this special dendrimer issue, he highlights recent developments in the chemical synthesis of carbohydrate-associated cancer vaccines that include the use of dendrimer technologies to trigger immune cell responses. When asked “why did you choose your current position?” René answered, “I got chemistry sets as Christmas gifts when I was a teenager”. When questioning him what the coolest thing about science is: “It is a never ending story!” declares René.

Glycodendrimers as functional antigens and antitumor vaccines by Tze Chieh Shiao and René Roy; New J. Chem., 2012, 36, 324-339; DOI: 10.1039/C2NJ20873C

Dr. Maria Angeles Muñoz-Fernandez is the Director of the HIV HGM BioBank and the head of the Laboratory of Molecular Immunobiology at the Hospital General Universitario Gregorio Marañón in Madrid, Spain. Her research interest centers on the role of nanomedicine (dendrimers) in immunology, molecular biology and HIV infection. In her contribution to this special issue, she presents advances in the design of innovative microbicides against HIV infection based on the use of dendrimers. “For me, research is an exciting activity that requires creativity, intuition, prudency, observation and reflexion. Mainly I chose to do research for the creativity. That for me is the most important activity and it is the reward I get”, says Ma Ángeles. Besides her research activity, Maria Angeles likes Flamenco dance and is an excellent dancer.

Synthesis and fluorescent properties of cationic carbosilane dendrimers containing eugenol linkers for their use in biomedical applications by Beatriz Rasines, Javier Sánchez-Nieves, Irene T. Molina, Manuel Guzmán, Ma Ángeles Muñoz-Fernández, Rafael Gómez and F. Javier de la Mata; New J. Chem., 2012, 36, 360-370; DOI: 10.1039/C1NJ20374F

For the full list of articles comprising this dedicated issue, click here!

Thanks to all of you, and see you next month for more!

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NJC Hot Articles: now available as Advance Articles on the web.

New dyes for LCD color filters!

In this NJC hot paper the scientists in Korea (Jae Pil Kim and co-workers) report some new phthalocyanine and coronene derivatives designed for dye-based green liquid crystal display (LCD) color filters.  Their thermal stability, optical properties, and solubility as the colorant materials for color filters were also investigated.

In addition, the synthesized six PC dyes and a benzopyrelene dye were successfully applied to the LCD color filters and showed superior optical properties than conventional pigment-based color filters.

Synthesis and characterization of thermally stable dyes with improved optical properties for dye-based LCD color filters by Jun Choi, Se Hun Kim, Woosung Lee, Chun Yoon and Jae Pil Kim, New J. Chem., 2012, Advance Article.

How to reduce the molecular dinitrogen to ammonia?

The problem is a classic of inorganic chemistry and the authors of this NJC hot paper (Chinnappan Sivasankar and co-workers) propose an interesting hypothetical approach to hydrogenating the complex. In general these reactions are mediated by a series of protonation and reduction steps. In this theoretical study, the authors propose a new methodology to reduce the molecular dinitrogen to ammonia in [WF(PH2(CH2)2PH2)N2] complex using some  co-catalysts in organic solvents.

With the help of DFT calculations the thermodynamic feasibility has been studied in three organic solvents (heptane, toluene and THF). The thermodynamic barriers for all the fundamental steps in the proposed catalytic cycle revealed that N2 can be reduced by H2 in all proposed organic solvents and that toluene would be the better choice of solvent than THF and heptane.

Hydrogenation of dinitrogen to ammonia in [WF(PH2(CH2)2PH2)2N2] using H2: Insights from DFT calculations by Perumal Balu, Sambath Baskaran, Venu Kannappan and Chinnappan Sivasankar, New J. Chem., 2012, Advance Article, DOI: 10.1039/C2NJ20929B, Letter.

Interested in reading further? Why not download the full articles now, FREE to access for a period of 4 weeks!

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NJC Issue 1 out now !

We welcome you to NJC’s first issue of 2012. The new year gets off to a good start with the publication of high-quality, original and significant research works that display photosensitizers, dynamic combinatorial libraries, ab initio calculations, quantum dots, molecular magnets and much more.


The outside front cover highlights a contribution from Cristina Silva Pereira et al. (Universidade Nova de Lisboa, Portugal and Queen’s University of Belfast, UK) that was aimed at defining the mechanism of toxicity of alkyltributylphosphonium chlorides [P4 4 4 n]Cl (n = 1, 3–8, 10, 12 or 14) in conidia of the filamentous fungus Aspergillus nidulans. Systematic elongation of one of the alkyl substituents resulted generally in higher toxicity, as defined by their inhibitory and lethal effects. In this study, fluorescence microscopy is proposed as a direct method for assessing the impact of ionic liquids on the plasma membrane integrity. Data were complemented by microscopic evaluation of the conidia cell wall and morphology. The higher toxicity of phosphonium ionic liquids carrying long alkyl substituents is most likely due to their strong interaction with the conidia cellular boundaries.


“Unravelling the mechanism of toxicity of alkyltributylphosphonium chlorides in Aspergillus nidulans conidia”, Marija Petkovic, Diego O. Hartmann, Gabriela Adamová, Kenneth R. Seddon, Luís Paulo N. Rebelo and Cristina Silva Pereira, New J. Chem., 2012, 36, 56-63, DOI: 10.1039/C1NJ20470J.


NJC issue 1, 2012 inside front cover was produced by Dr Mike P. Coogan (Cardiff University, UK), Prof Lallan Mishra (Banaras Hindu University, India) and co-workers. In this research article, the authors describe the synthesis and study of a range of rhenium complexes appended through the axial pyridine ligand with groups known to direct cellular localisation. These complexes retain both their useful DNA binding and photophysical properties, while gaining the organelle specific-localisation desired. The imaging studies suggest that such complexes may be used as probes for oligonucleotides in specific cellular compartments (e.g. mitochondrial DNA). In addition, this study demonstrates that cellular localisation parameters are a vital consideration when designing probes to be applied in vivo.

“The importance of cellular localisation of probes: synthesis, photophysical properties, DNA interactions and cellular imaging properties of rhenium dppz complexes with known cellular localisation vectors”, Flora L. Thorp-Greenwood, Michael P. Coogan, Lallan Mishra, Niraj Kumari, Geeta Rai and Srikrishna Saripella, New J. Chem., 2012, 36, 64-72, DOI: 10.1039/C1NJ20662A.


You can access and read the whole issue available online at: NJC 2012, Issue 1. Leave us a comment and let us know what you think!


We wish you a happy new year 2012!

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NJC Issue 12 online!

We welcome you to NJC’s December issue out now. This month again NJC publishes high-quality, original and significant research works in the areas of supramolecular chemistry, organometallic chemistry, catalysis, nanostructures, material sciences, electrochemistry, sensing, synthetic chemistry, crystallographic engineering and much more.

The outside front cover highlights our latest article by Annarosa Mangone et al. (University of Bari, Italy) that was aimed at defining the compositional and structural characteristics of a group of monochrome blue faiences recovered in Pompeii to assess provenance on the basis of their technological features. The data obtained by the joint usage of different complementary analytical techniques provided detailed diagnostic information, useful for enriching the knowledge of the technological-productive aspects of Roman ceramics, and led to interesting archaeometric and archaeological results.

A multianalytical study of archaeological faience from the Vesuvian area as a valid tool to investigate provenance and technological features by Annarosa Mangone, Giuseppe Egidio De Benedetto, Daniela Fico, Lorena Carla Giannossa, Rocco Laviano, Luigia Sabbatini, Inez Dorothé van der Werf and Angela Traini; New J. Chem., 2011, 35, 2860-2868; DOI: 10.1039/C1NJ20626E.

NJC issue 12, 2011 inside front cover was produced by Dr Sophie Tingry and co-workers (University of Montpelier II). In this research article, the authors describe novel approach towards electrospun carbon nanofibers (CNFs) through electrospinning and thermal carbonization treatment. The intensified current density achieved at the CNFs modified bioelectrode suggests that CNFs are promising candidates for improving the catalytic oxygen reduction at enzymatic cathodes. The simple and facile procedure makes the CNFs electrode a promising prospect in developing bioelectrochemical devices.

Fabrication of free-standing electrospun carbon nanofibers as efficient electrode materials for bioelectrocatalysis by Ai-Fu Che, Vincent Germain, Marc Cretin, David Cornu, Christophe Innocent and Sophie Tingry; New J. Chem., 2011, 35, 2848-2853. DOI: 10.1039/C1NJ20651F.

You can access and read the whole issue 12 of NJC here. Leave us a comment and let us know what you think!

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Hot article: Multifunctional lanthanide-organic octahedra heterogeneous catalysts.

Scientists in China have designed and prepared new heterogeneous catalysts based on the assembled metal–organic polyhedra to exhibit efficient base-type and acid-type catalytic performances at the same time.


New channel-like and cage-like porous materials have been prepared through the packing and stacking of the amide containing lanthanide-based octahedra Tb–PT1 and Sm–PT1 featuring both Lewis acidic Ln3+ sites and basic amide group sites. Their catalytic properties have been validated in cyanosilylation reactions and aldol reactions, in a size-selective fashion through base-type and acid-type catalysis sites, respectively.

These crystalline molecular materials hierarchically assembled from semi-infinite metal–organic polyhedra are thus expected to be useful catalysts which could combine the advantage of a heterogeneous catalyst and the excellent size discrimination properties of the polyhedra in solution.

Catalytic performance of lanthanide molecular solids containing well-modified metal–organic octahedra by Xiao Wu, Zhihua Lin, Cheng He and Chunying Duan; New J. Chem., 2012, Advance Article DOI: 10.1039/C1NJ20736A, Paper

Interested in reading further? Why not download the full article now, FREE to access for a period of 4 weeks!

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NJC poster prize winners at the 2011 EJCC in Ottawa, Canada.

We are pleased to announce the recent poster prizes awarded at the 2011 Entretiens Jacques Cartier Colloquium on 21st Century Catalysis Science and Applications held in Ottawa, Canada on September 29,30.

  • Dr. Marianne Trépannier (University of Ottawa) was selected for her poster entitled, “The role of catalytic site deposition on cobalt catalysts supported on carbon nanotubes for Fischer-Tropsch synthesis.”

Marianne obtained her PhD degree from the University of Saskatchewan, Canada. During her PhD study she worked on research project that focused on improving the Co/CNT catalyst selectivity for FTS synthesis. ”The most important result of this project is that by controlling the active metal position in the carbon nanotubes (CNT) support, the catalyst shows better selectivity for diesel. Moreover, deposition of the cobalt particle inside the CNT decreases the catalyst deactivation phenomena”, comments on her project results.

Marianne now holds a postdoctoral position in Dr. Sayari group at Center for Catalysis Research and Innovation and her future plan is to become a research leader in catalysis for renewable energy.

(photo: Dr. Marianne Trépannier and Prof. R. Tom Baker,  CCRI Director (University of Ottawa))


  • The other poster prize was awarded to Dr. Daniel Harrison (University of Ottawa) for his poster entitled, New cobalt fluorocarbenes: Synthesis and preliminary reactivity studies.”

    Daniel is postdoctoral researcher in Prof. Tom Baker’s group, at the Centre for Catalysis Research and Innovation, University of Ottawa, Canada.
    The goal of his project has been to make new, nucleophilic metal fluorocarbenes of non-precious metals for potential applications in fluoroalkene polymerization. A real challenge, as it turns out…Working on this project early two years, Daniel has had success in extending chemistry developed by Hughes and co-workers to cobalt (their work has focused on much more expensive Ir).The syntheses of the new cobalt fluorocarbenes were disclosed in the prize-winning poster for the first time. Preliminary reactivity studies, establish that these new fluorocarbenes of cobalt have the desired nucleophilic reactivity.
    When queried about his future plans, Daniel commented: “I’ll continue working on cobalt fluorocarbenes, while balancing other responsibilities, such as lab maintenence and supervising undergraduate/graduate students.  I’m thrilled with the opportunity to stay in the Baker group, especially now that my project is working!”

Many congratulations again from the NJC editorial team to Marianne and Daniel on their awards, and to the organizers of this conference for their help in organizing these awards.


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